I recently came into a bootleg Cadillacs PCB. It's a pretty rough job as you can see below. The sound on the board sounds like it's using only the Yamaha chip (whichever one sounds like a mega drive), which is a life-ruining problem for me. The sound effects are all wrong, the music resets to the same track whenever a certain sound channel is used, etc. I'm assuming some pirates burned new ROMs for the B board of a cheaper CPS1 game, & I was wondering if there's any way I can restore the game's original sound via the same method. I'm worried that this board might lack the appropriate Q-Sound hardware, so if anyone's had any experience with CPS1 bootleg restoration, your input would be greatly appreciated.

If necessary I can get a video going, but I doubt it's that complex of a problem.
Thanks,
Richter.